CN103269983A - Water clarification composition and process - Google Patents
Water clarification composition and process Download PDFInfo
- Publication number
- CN103269983A CN103269983A CN2011800624387A CN201180062438A CN103269983A CN 103269983 A CN103269983 A CN 103269983A CN 2011800624387 A CN2011800624387 A CN 2011800624387A CN 201180062438 A CN201180062438 A CN 201180062438A CN 103269983 A CN103269983 A CN 103269983A
- Authority
- CN
- China
- Prior art keywords
- water
- composition
- ammonium
- weight
- polymkeric substance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/547—Tensides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/002—Grey water, e.g. from clothes washers, showers or dishwashers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/12—Inert solids used as ballast for improving sedimentation
Abstract
The present invention is in the field of water purification compositions and processes. In particular the invention relates to the clarification of laundry wash and/or rinse liquor for water saving by re-use. A fast water purification and clarification process for the treatment of household water, especially laundry wash and more typically laundry rinse water remains to be desired. It is therefore an object of the present invention to provide water saving in household process, especially laundry processes, especially hand wash; especially in a short time. We have found that a composition comprising flocculant, coagulant, filler and cationic surfactant provides effective water clarification and purification.
Description
Invention field
The present invention relates to water cleansing composition and method field.Particularly, the purification of the present invention relates to do washing washing and/or rinsing liquid is used for reusing to economize on water.
Background of invention
It is more and more rare that water becomes, particularly all the more so in developing country, and here people often must walk a lot of kilometers road and could arrive the water source.
In the world, washing methods comprises laundry, washes the dishes and other household cleaning methods, needs a large amount of water.The water that abandons is the burden of waste water disposal facility, or the burden of the surface water of developing country supply.
A kind of water saving mode is Water reuse.For can the recycling service water, the washing water of particularly doing washing, be used for that ensuing family expenses clean or cleaning purpose, particularly ensuing laundry washing or rinsing clothes, need remove undissolved at least material, remove tensio-active agent residue, the basicity of anhydrating and make water bleeding.
Several process for purifying water are disclosed in the prior art.
The drink water purifying method for example is disclosed among India application 918/MUM/2000 or the WO2008/092724, and the two all is Unilever.Such system has typically utilized flocculant material that material is flocculated to come out and the bigger aggregate that has utilized the flocculation agent material that particle aggregation is become to be easier to separate from solution.In addition, such composition comprises some inorganic insoluble compounds and serves as on the one hand the seed of flocculation and make throw out sedimentation quickly as weight on the other hand.
Drink water purifying is very complicated, because it requires product to be suitable for human consumption, and therefore should comprise bacterium, virus and the sporangiocyst of very low amount.Therefore it be very expensive, and the human consumer accepts it and needs the time to process.
For the laundry that water is used for simply developing country, the perhaps cleaning of other family expenses substrates, except degerm, the requirement of virus and sporangiocyst can be too strict, but need remove tensio-active agent, because the water of recirculation will be for purging method subsequently, and the accumulation of tensio-active agent is not preferred.In addition, the human consumer will expect the water of recycling laundry washing liq, be used for rinsing subsequently, perhaps more typically the water of first rinsing clothes is reused for second rinsing clothes, perhaps even with final rinsing clothes water be reused for another family expenses purpose, they do not wish to wait 1 hour or half an hour process water.So the waiting time for fear of the length between each washing stage, be desirable in the time of much shorter and handle water.
Other application of process for purifying water are typically in the industrial waste water purifying field.Various industry comprise that chemical makes refuse, from the refuse of dairy farm and canning factory, and the distillery refuse, fermentation waste is from the refuse in paper mill, from the refuse of dye factory with from the waste water of water drain and sludge treatment.US2006016761, Ciba discloses a kind of suspension dehydration method, wherein high molecular weight water-soluble cationic polymer flocculation agent and encapsulated low-molecular weight water-soluble flocculation agent is mixed with suspension.According to US2006016761, this flocculation agent just can be discharged in the suspension up to flocculating.
These methods need to pass through big water treating equipment and for example for drink water purifying, it can need spended time to process.
Still expectation is for the treatment of service water, particularly laundry and more typically quick desalt and the purifying method of rinsing clothes water.
Therefore a target of the present invention provides in family expenses method, particularly clothes washing method, particularly hand washing, in water saving.
Another target of the present invention provides a kind of simple water cleansing composition, and it can directly join in the bucket that contains addle.
The another target of the present invention is in less than 15 minutes, is more preferably less than 10 minutes, further is more preferably less than 5 minutes and realized purification ideally in 2-3 minute.
The another target of the present invention is that said composition is not only purified waste water, and has removed tensio-active agent simultaneously.
The another target of the present invention is the basicity that said composition has further reduced said composition.
The another target of the present invention is that said composition is single composition, and does not need the human consumer to measure different compositions and/or be metered into different components with special order.
Surprisingly, we have found that the composition that comprises flocculation agent, flocculation agent, filler and cats product provides effective water to purify and purifying.
Summary of the invention
Therefore, the invention provides a kind of water cleansing composition, it comprises: the ionogen flocculation agent that is selected from aluminium salt and molysite of 30-70 weight %; 0.5-5 the neutral and/or anion-modified polymkeric substance flocculation agent of weight % (MW〉100kD); The mineral filler of 15-35 weight %, its density is at least 1.5 kg/dm
3Solution with the polymkeric substance of the quaternary ammonium cation tensio-active agent of 20-40 weight % and/or quaternary ammonium compound.
In second aspect, the invention provides a kind of process for purifying water of washing water, its step comprises that every liter of washing water are metered into the composition of the present invention of 0.3 – 2g, stirs at least 10 seconds, makes particles settling, separates this particle from water.
In the third aspect, the invention provides a kind of external member, it comprises bucket, dividing plate (separator plate) structure, potion composition of the present invention, and operation instruction at least.
In the context of the invention, term " floss " expression is gathered into the material of flocculent substance.
In the context of the invention, the household cleaning water that term " washing water " expression is any, the water (being also referred to as washing liq) of typically doing washing, more specifically rinsing clothes water (being also referred to as rinsing liquid).
By reading following detailed description book and additional claim, these and other aspect, feature and advantage will become apparent to those skilled in the art.For fear of doubt, any feature of one aspect of the present invention can be used for any other side of the present invention.It is expression " comprising " that word " comprises " purpose, but need not " by ... form " or " by ... constitute ".In other words, listed step or option need not to be exhaustive.It should be noted that the example purpose that provides in the following description is to illustrate the present invention, but not be intended to limit the invention to these examples itself.Similarly, unless indication is arranged in addition, whole per-cent is w/w per-cent.Except in operation and comparative example, perhaps clearly indicating part, otherwise whole numeral of representing the physicals of quantity of material or reaction conditions, material and/or purposes in this specification sheets is appreciated that with word " approximately " and revises.The numerical range of representing with the form of " from x to y " is understood to include x and y.When for special characteristic with the formal description of " from x to y " during a plurality of preferred range, be to be understood that the four corner that has made up different end points also can expect.
Embodiment
The invention provides the method for water cleansing composition and purification and washing water.
The water cleansing composition
Water cleansing composition of the present invention comprises ionogen, polymkeric substance, mineral filler, the solution of the polymkeric substance of quaternary ammonium cation tensio-active agent and/or quaternary ammonium compound.
The granularity of solids component can be used for regulating flocculation kinetics settling velocity.
The ionogen flocculation agent
This ionogen can be that any Al is or/and Fe salt.They can be the prehydrolysis form of basicity (B).Preferred this basicity (B=Al/OH) is 10-90, and more preferably this basicity is 40-80.
For Al salt, the minimal solubility of aluminium hydroxide is typically at the pH of 6.8-7.5, and the minimal solubility of ironic hydroxide is typically at pH4-8.In addition, under the situation of the system of handling with molysite, the amount height of the solid sediment that produces is because the solubleness of ironic hydroxide is lower than aluminium hydroxide in above-mentioned pH scope separately.This can be used for regulating precipitation kinetics, for example regulates by the combination of using Al and Fe electrolytic salt.Therefore not too meticulous to the control requirement of pH with the system of molysite processing, be more sane therefore.But residual dissolving molysite makes water painted, and this can have a negative impact to cleaning fabric, is not too preferred therefore.
Do not wish to be subject to theory, it is believed that the ionogen flocculation agent has mainly caused particle aggregation by two known mechanism, it comprises that charge neutralization and volume sweep flocculation (sweep flocculation).Used electrolytical concentration is being controlled the mechanism that relates in the described method in the system.If ionogen adds (it is lower than this electrolytical solubility limit) with low-down concentration, charge neutralization mechanism then takes place, the wherein ion of the electrolytical oppositely charged that added in the system of the surface charge of particle neutralization has reduced intergranular Coulomb repulsion thus and has promoted agglomeration of particles.Add fashionablely when ionogen is excessive, it experiences hydrolysis reaction, as a result of, and Al (OH)
3Perhaps Fe (OH)
3Be precipitated out, and discharge proton.The proton that discharges helps to reduce the alkalescence of washing liquid and make pH close to neutrality.In addition, this Al (OH)
3Or Fe (OH)
3Particle has formed porous network structure, and particle is captured to receive in the described structure, and when this matrix sedimentation, particle is eliminated out described system.In the presence of tensio-active agent, charge neutralization unlikely takes place, because at Al (OH)
3Or Fe (OH)
3The surfactant layer that adsorbs on the particle has suppressed agglomeration of particles by giving steric stabilization.This appears at volume and sweeps under the situation of flocculation, the Al (OH) that original position produces
3Or Fe (OH)
3Be considered to exhaust the tensio-active agent in cleaning or the rinsing liquid.Be to be understood that this tensio-active agent is by being adsorbed onto positively charged Al (OH)
3Perhaps Fe (OH)
3On the particle and exhaust.So for containing the two laundry liquid of tensio-active agent and basicity, it is the preferred routes of particle aggregation that volume is swept flocculation.
This ionogen flocculation agent exists with the concentration of 30-70 weight % in described composition.This ionogen flocculation agent preferably exists with the concentration of at least 35 weight % of composition, more preferably at least 40 weight % and further more preferably at least 45 weight %.This ionogen flocculation agent preferably exists with the concentration of the 65 weight % that are not more than composition, more preferably no more than 60 weight % with further more preferably no more than 55 weight %.
This electrolyte composition can be solids composition, and liquid composition or any composition between the two comprise and sticking with paste and gel.
Electrolytical granularity
The granularity of ionogen flocculation agent preferably like this, that is, mean particle size is the 10-500 micron, preferred 100-400 micron or even 200-300 micron.Further more preferably the size of at least 80% electrolyte granular (weight) less than 500 microns, more preferably 90%, further more preferably 95% or even 99 weight %.In addition preferably the size of the electrolyte granular of at least 80% (weight) greater than 100 microns, more preferably at least 90% or even at least 95%.
[0032] The polymkeric substance flocculation agent
Represent the polymkeric substance of high molecular adsorptivity neutrality or ion modification, for example polyacrylamide with the polymkeric substance flocculation agent.
Volume is swept flucculation process and is made the particle instability, and when the dispersion sedimentation with particle from wherein scanning out, but the kinetics of this sedimentation is very slow.In addition, the sedimentation material of floss loosens in essence, has therefore kept a large amount of water in its structure.In some systems, this can hinder the organic efficiency of water.This problem is by adding polymkeric substance, preferred long chain polymer and being solved.This polymkeric substance is considered to be adsorbed onto on the particle surface and they is combined form bigger and stronger floss thus.This phenomenon is known as the flocculation of building bridge.This bridge formation mechanism helps to improve the settling velocity of floss, the organic efficiency that helps water purification faster and improve water.
This polymkeric substance flocculation agent exists with the concentration of 0.5-5 weight % in composition.The polymkeric substance flocculation agent preferably exists with the concentration of at least 1 weight % of composition, more preferably at least 1.5 weight % and further more preferably at least 2 weight %.This polymkeric substance flocculation agent preferably exists with the concentration of the 4.5 weight % that are not more than composition, more preferably no more than 4 weight % with further more preferably no more than 3 weight %.
This polymkeric substance flocculation agent preferably is selected from neutral and/or anion-modified adsorbability polymer.Most preferred polymkeric substance is polyacrylamide.
This polymkeric substance preferably has MW〉high molecular of 100kD.This molecular weight (MW) is more preferably less than 2000kD typically less than 5000kD, further is more preferably less than 1000kD.This polymkeric substance is preferably water miscible.
For fear of doubt, with D (dalton) expression atomic mass unit (amu, not too Chang Yong SI units).
Most preferred polymkeric substance is molecular weight〉the neutral and/or anion-modified polyacrylamide polymers of 100kD.
The granularity of polymkeric substance cohesion flocculation agent
The granularity of polymkeric substance preferably like this, that is, mean particle size is less than 150 microns, preferred 10-150 micron.Further more preferably the size of at least 80% electrolyte granular (weight) less than 150 microns, more preferably 90%, further more preferably 95% or even 99 weight %.
Do not wish to be subject to theory, have been found that with using bigger particle and compare, when mean particle size during less than 150 microns sedimentation ground faster.
[0039] Mineral filler
Filler of the present invention can be any inorganic materials, its preferably not with system in any other composition reaction of existing.It is typically the high-density solid.
This mineral filler is preferably selected from natural or synthesis of clay and water-insoluble inorganic salt.Preferred filler comprises feldspar (KAlSi
3O
8), kaolin, bentonite and attapulgite, and aluminum oxide (comprising the silica alumina composition) and MgO.
This mineral filler is considered to increase amounts of particles.The particle number density of this increase has caused faster, and floss forms.Formed floss is also heavier, and this is owing to the additional mass of filler, and therefore also sedimentation gets faster.Think that in addition having of filler helps Al (OH)
3Or Fe (OH)
3The nucleation that network forms is improved volume thus and is swept flocculation kinetics.In addition owing to its higher density, it is believed that it has improved the settling velocity of floss and improved whole flocculation kinetics.Have been found that in addition filler has played as functional component, as cats product and/or cationic polymers, the effect of carrier, it is found that it helps to remove the residual tensio-active agent that exists in the system by precipitation or complexing.
This mineral filler exists with the concentration of 5-35 weight % in composition.This mineral filler preferably with at least 10 weight % of composition and more preferably the concentration of at least 15 weight % exist.This mineral filler preferably exists with the concentration of the 30 weight % that are not more than composition, more preferably no more than 25 weight %.
Preferably do not use rhombspar clay (CaMg (CO in a large number
3)
2), preferably be not more than 10 weight % of filler, be more preferably less than 5% of filler, further be more preferably less than 1% or even 0 weight %.Have been found that rhombspar can cause effervesce when producing paste, this may be with prescription in the reaction of the acid-salt that exists cause.This more normal generation when existing moisture or some system component moisture it is believed that it has hindered the purification of some washings or rinsing liquid.MgO and chemical compound lot are reactive, and this is that those skilled in the art are known usually.It can cause thermopositive reaction, causes forming heat and may produce processing problems in some compositions, and particularly all the more so in the presence of water, this then can influence the efficient of prescription.
Known 2:1 clay such as attapulgite, bentonite can keep more liquid in its structure, this it is believed that it is reason with the time quantum of hang-over n. of cationic materials expectation, and this has influenced the efficient of prescription.So the 2:1 clay is not too preferred in prescription of the present invention.
Therefore, attapulgite, MgO and/or rhombspar are preferably not a large amount of, preferably are not more than 10 weight % of the filler in the paste composite, are more preferably less than 5% of filler, further are more preferably less than 1% or even 0 weight % of filler.
Most preferred filler is the 1:1 clay, most preferably kaolin or feldspar.
The granularity of filler
The granularity of filler preferably like this, that is, mean particle size is the 5-50 micron, preferred 10-40 micron.Further more preferably the size of at least 80% electrolyte granular (weight) less than 50 microns, more preferably 90%, even more preferably 95% or even 99% weight.Further preferably the size of the electrolyte granular of at least 80% (weight) is greater than 5 microns, and more preferably at least 90% or even at least 95%.
When following cats product was fixed in the filler particles (perhaps applying thereon), above-mentioned size-grade distribution was further preferred.It is found that this provides stable composition.
The solution of quaternary ammonium cation tensio-active agent
The solution of representing quaternary ammonium cation tensio-active agent and/or quaternary ammonium compound polymkeric substance with the solution of quaternary ammonium cation tensio-active agent.This also is referred to as quaternary ammonium compound below.
Though think that this tensio-active agent is by being adsorbed onto Al (OH)
3Or Fe (OH)
3On the throw out and exhaust, but it does not removed fully because the degree of removing depends on the starting point concentration in washing liq and/or removes kinetics.So the processing water that contains remaining tensio-active agent can not be considered to " fresh " water that can re-use in the context of the invention.The residual tensio-active agent of very low amount can produce foam in addition, and this can give the human consumer indication of " not being clean water ", and does not satisfy the standard of fresh water, so this water can not be accepted to be further used in clothes washing method or any other home method by them.So must remove maximum tensio-active agents does not produce the visible foam to it degree.
In order to meet this requirement, this quaternary ammonium compound is joined in the described system, remove remaining anion surfactant by precipitation, it has than adsorbing kinetics faster.
The solution of this quaternary ammonium compound exists with the concentration of 20-40 weight % in composition.This cats product preferably with at least 24 weight % of composition and more preferably the concentration of at least 26 weight % exist.This cats product preferably exists with the concentration that is not more than 35 weight % of composition, more preferably no more than 33 weight %.
This quaternary ammonium surfactant is preferably zephiran, hexadecyl-trimethylammonium-ammonium, tetradecyl-trimethylammonium-ammonium, dodecyl-trimethylammonium-ammonium, stearyl-trimethylammonium-ammonium, octadecyl-trimethylammonium-ammonium, dodecyl pyridine, cetyl pyridinium, the tetrabutyl-ammonium, four heptyl-ammonium, 1, the halogenide of 3-decyl-2-methyl-imidazoles, 1-hexadecyl-3-methyl-imidazoles, didecyl-dimethyl-ammonium, didecyl-dimethyl-ammonium.
The polymkeric substance of quaternary ammonium compound also is applicable to said composition.Particularly the diallyl dimethyl ammonium halide class is preferred in the context of the invention.Most preferred this compounds is polydiene propyl-dimethyl ammonium halide (being also referred to as PolyDADMAC).(it defines H to allyl group in the PolyDADMAC polymkeric substance
2C=CH-CH
2R) preferably have the carbochain (R) of 8-22 carbon atom, be more preferably less than 20, further be more preferably less than 18 carbon atoms or be not more than 16 carbon atoms.
The polymkeric substance of quaternary ammonium compound typically molecular weight is 10-1000kD, preferred 40-400kD.
Most preferred halogenide is muriate.Fluorochemical and iodide can be expected in the context of the invention because of their biocidal active.Bromide is not preferred owing to their toxicity usually.
The most preferred cationic surfactants that is used for the present invention is benzyl alkane ammonium chloride (BAC) and PolyDADMAC class.
The polymkeric substance of many commercially available quaternary ammonium cation tensio-active agents and quaternary ammonium compound is commercially available with the solid piece form, often toxigenicity and irritating smog.They typically are difficult to mixing and/or are dissolved in the neutralization of laundry liquid be difficult to processing in addition.
So this quaternary ammonium compound is metered into the aqueous solution form of compound usually, wherein the ratio of compound and water is 2:1-1:2.
In a kind of embodiment preferred, cats product is sprayed on the filler particles, and granulation.This can finish by the spray equipment of routine.Optimum be by preferably in plough formula shear mixer mixed fillers and cationic solution obtain ground, it is found to uniform positively charged ion coating is provided on filler.
Filler: the ratio of cats product is preferably 4:1-1:4, more preferably 3:1-1:2, further more preferably 2:1-1:1.
After granulation, the granularity of the filler that positively charged ion applies preferably like this, that is, mean particle size is the 10-250 micron, preferred 20-200 micron or even 25-180 micron.Further more preferably at least 75%, more preferably 80%, further more preferably the size of 85% electrolyte granular (weight) less than 250 microns.In addition preferably the size of the electrolyte granular of at least 80%, more preferably at least 90% (weight) greater than 25 microns.
After the filler granulation that cats product applies, preferably the gained powder is screened, to remove higher sized granules, more preferably also remove granularity less than 10 microns fine powder.
Buffer reagent
In washing liq, exist under the situation of wide pH variation, buffer reagent can be incorporated in this prescription.Observed pH changes owing to different reasons, as the water source quality, and the variable dose of stain remover prescription, the different stain remover prescriptions of forming and human consumer's different washing habits.Remain on certain level so importantly guarantee final pH, this moment, soluble aluminum was residual with its minimal solubility limit, and final pH is similar to the water source or close to neutrality.
In a kind of embodiment preferred, this buffer reagent can be carbonate or phosphate system.It can exist with the 5-20% of whole composition.
Ideally, buffer reagent has the granularity less than 500 microns, to avoid the difference segregation (differential segregation) of final composition.
Composition forms
Said composition preferably is the form of solid, preferred powder or paste.Liquid composition and gel also can be expected in the context of the invention.
In powder type, optimum is to obtain when flocculation agent ionogen and polymkeric substance flocculation agent are the particle that is scattered in respectively in this powder composition.When granulation was in individual particle, some combination of flocculation agent and flocculation agent may be reacted each other, had reduced their effectiveness separately thus.
Owing to the character of ionogen flocculation agent of the present invention and polymkeric substance flocculation agent, the common a little higher than flocculation agent of electrolytical dissolution rate.This is of value to the present invention.This effect can be littler and/or more not fine and closely further strengthen than flocculation agent particle by making electrolyte granular.
When the polymkeric substance flocculation agent was particulate form, dissolving was slow usually for it.So a kind of further preferred embodiment (showing excellent result) is such product form, wherein electrolyte granular is dispersed in the paste or gel of the flocculation agent that has comprised dissolving.Best gel obtains during for 2:1-1:1.3 at the ratio of filler and quaternary ammonium compound solution.
Method for purifying water
The present invention further provides a kind of method of purifying waste water, its step comprises: composition of the present invention is metered in the washing water, stirred at least 10 seconds, make particles settling, and separate this particle from water.
In order to obtain good result, should be metered into the composition of the present invention of about 0.3 – 2g in every liter of washing water.
Preferably be metered into 0.4g/L at least, more preferably even at least 0.5g/L.Be metered into more raisings that decontamination effect improving is not provided greater than 1g/L, and greater than the dosage of 2g/L even can produce harm to the effect that obtains.
After being metered into, must stir the washing water at least 10 seconds that comprise said composition, preferably at least 20 seconds, but be no more than 1 minute usually.Stirring can be carried out with the device of any kind of, for example spoon, rod or any other whipping appts.
After stirring, make particles settling at container bottom, can separate transparent and the water that purifies, for example decantation from the sedimentation floss of container bottom thereafter.
Sedimentation device
Usually use bucket to carry out the hand washing of clothes, this mainly occurs in developing country.
In a kind of embodiment preferred, the invention provides a kind of structure, the settlement plate that is used for standard-sized bucket structure wherein is provided.
This settlement plate structure comprises for the device that settlement plate is kept together, for example the center bar that is connected thereto of described plate.This settlement plate structure is preferably removed from bucket easily.Because settling time and particle need move apart from linear dependence, the time required with this plate tectonic subsidence can reduce the coefficient that approximates the plate number greatly: t
No plate=t
Plate is arranged* n
Plate
This settlement plate structure typically comprises 3-10 plate, preferred 4-8 plate.The distance to each other of these plates is 2-15 cm, preferred 4-10cm.
In another embodiment, provide external member, it comprises bucket and settlement plate structure, and potion composition of the present invention and overlaps operation instruction at least.
This barrel may further include the water-freeing arrangement in the bottom, for example plug or valve or faucet device.For fear of doubt, in the context of the present invention, water-freeing arrangement has at least 2 states, and one is that opening with one is to close.This will make that water can be discharged to another container from this bucket when bucket places than the high height of another container.
Embodiment
To the present invention be described by following indefiniteness embodiment now.
Embodiment 1: the effect of filler
We have carried out the settling test of composition of the present invention, compare with the same combination that does not have filler.
Made a kind of washing liq of simulation, comprised 0.4g/L soda, the 0.3g/L linear alkylbenzene sulphonic acid.
Method
The washing liq of 1L is taken in the graduated cylinder of high 30cm, diameter 7.35cm.
With composition of the present invention (embodiment 1) with identical, but the composition (comparative example A) that does not have filler compares.
Composition
| ? | PAC(g) | Neutral polymer (g) | Anionic polymer (g) | Filler (g) | BAC (50% solution) (g) |
| Embodiment 1 | 0.6 | 0.01 | 0.01 | 0.5 | 0.24 |
| The comparative example A | 0.6 | 0.01 | 0.01 | 0 | 0.24 |
This neutral polymer be polyacrylamide (PAM, Mw=1000-2000kD), this anionic polymer is anion-modified PAM (Mw=1000-2000kD), PAC is poly aluminium chloride (B=60), BAC is benzyl alkane ammonium chloride; Filler is feldspar.
In this test, BAC solution at first is metered in the washing liq, and stirred 5 seconds, then all the other compositions are metered in this washing liq, and stirred 30 seconds by means of hand whisk (being made of plastics).
Measured the time that is deposited to graduated cylinder bottom (approximately 20cm).
The result
| ? | Settling time (second) |
| Embodiment 1 | 305 |
| The comparative example A | 601 |
This result has confirmed that composition of the present invention (embodiment 1) provides the sedimentation floss faster than Comparative Examples A.
Following table has shown embodiment 1 and comparative example A's subsidence curve.
Last table has shown embodiment 1 and comparative example A's subsidence curve, and shows that this embodiment not only provides sedimentation faster, and velocity curve shown peak velocity, and the velocity curve in the contrast test is constant in whole settling process.
Embodiment 2: foam control
In this embodiment, confirmed to comprise cats product composition subtract the bubble effect.
Prepared a kind of artificial human consumer's rinsing liquid, it contains earth, tensio-active agent, soda, ionogen and hardness ions (hardness ions).
This rinsing liquid is the mixture of soil and water, and is as follows:
(A) 0.25g/L simulated soil, it is 90% clay, 5% silicon-dioxide, 2.5% carbon black, 1.25%Fe
2O
3And 1.25%Fe
2O
4Mixture;
(B) the Wheel Lemon and Jasmine stain remover powder (in July, 2010 is from India Unilever) of 1g/L, it comprises ~ 10% tensio-active agent, ~ 25% soda, ~ 50% ionogen, all the other ~ the 15%th, submember); With
(C) water of 6 fH (2:1)=(Ca:Mg); FH is French hardness.
The rinsing liquid body characteristics is as follows:
Foam adopts graduated cylinder suspension system (cylinder shake method) to measure: 40ml solution is poured in the glass cylinder of 250ml, used plug closes.This graduated cylinder is shaken 10 times, and behind 0min and 5min, measure lather volume in the solution height that is higher than 40ml.
Prescription below having compared.
| ? | PAC(g) | Neutral polymer (g) | Anionic polymer (g) | Filler (g) | BAC (50% solution) (g) |
| Embodiment 2 | 0.2 | 0.005 | 0.005 | 0.5 | 0.12 |
| Comparative Examples B | 0.2 | 0.005 | 0.005 | 0.5 | 0 |
The composition of embodiment 2 and Comparative Examples B is joined in the rinsing liquid.With this liquid agitation 30 seconds, leave standstill 1 minute, and then stir 30 seconds, and leave standstill 5min.
For embodiment 2, equally BAC is at first joined in the rinsing liquid, stirred 5 seconds, add described composition then together.
This result shows with the composition of embodiment 2 and removed foam fully, and do not remove in Comparative Examples B, and this removes per-cent owing to tensio-active agent separately.
Embodiment 3: discharged cationic effect before other compositions
In embodiment 3, BAC was metered into before other compositions, and in embodiment 4, BAC is metered into other compositions, and in Comparative Examples C, BAC is adding in 5 seconds after other compositions.
| ? | PAC(g) | Neutral polymer (g) | Anionic polymer (g) | Filler (g) | BAC (50% solution) (g) |
| Embodiment 3 | 0.2 | 0.005 | 0.005 | 0.5 | 0.12 |
| Embodiment 4 | 0.2 | 0.005 | 0.005 | 0.5 | 0.12 |
| Comparative Examples C | 0.2 | 0.005 | 0.005 | 0.5 | 0.12 |
| ? | Turbidity, (NTU) | Positively charged ion is metered into |
| Embodiment 3 | <10 | Before other compositions |
| Embodiment 4 | <10 | With other compositions |
| Comparative Examples C | 55 | After other compositions |
Last table shows that the interpolation order is influential for performance of the present invention.
Embodiment 4: the influence of polymer particle size
Commercially available anion-modified PAM polymkeric substance is piled up to sieve by sieve.The result is presented in the following table:
| The BSS screen size | Granularity, micron | Weight, g | Mark |
| 10 | 1680 | 0 | 0 |
| 12 | 1400 | 0 | 0 |
| 18 | 850 | 118 | 3 |
| 30 | 500 | 2120 | 55 |
| 60 | 250 | 626 | 16 |
| 100 | 150 | 664 | 17 |
| The bottom | <150 | 293 | 8 |
Floc test is as embodiment 1, uses the graduated cylinder of high 30cm, diameter 7.2cm to carry out.Carried out the test identical with embodiment 1 with two kinds of different screenings:
Sieve 1:＜150 microns
Screening 2:〉500 microns
Settling time provides in following table:
| ? | Time |
| Screening 1 (＜150 microns) | 40-45 second |
| 500 microns of screenings 2 (〉) | 90-100 second |
Last table display size has produced than the bigger better sedimentation of screening less than the screening of 150 microns polymer beads.
Embodiment 5: with the filler of cats product coating
Relatively the filler particles (feldspar) of two kinds of sizes defines best sedimentation result.
Feldspar A has fine granularity and feldspar B has thicker granularity.Two kinds of particles that will mix then apply with cationic materials.
This feldspar is put into plough formula shear mixer (PSM); In room temperature with 1.5-2 kg pressure to its spraying BAC aqueous solution of 50%.Spraying and BAC carry out 2min with mixing of feldspar.
When using feldspar A and B, the PSD of the feldspar that BAC applies
| Granularity, micron | Coating on feldspar A | Coating on feldspar B |
| <180 | 80.78 | 77.9 |
| 180-250 | 2.11 | 2.31 |
| 250-355 | 6.38 | 3.24 |
| 355-500 | 7.72 | 4.04 |
| 500-710 | 3 | 8.16 |
| 710-1000 | 0 | 4.36 |
| 1000-1400 | 0 | 0.00 |
When using feldspar A and B, the feldspar that BAC applies＜PSD of 180 microns particle
| ? | ? | ? |
| <25 | 53.33 | 8.3 |
| <50 | 67.28 | 36.68 |
| <75 | 74.46 | 61.62 |
| <100 | 78.46 | 72.02 |
| <125 | 80.35 | 75.15 |
Therefore, need carry out the screening of the feldspar of BAC coating, remove the particle of higher granularity level.Although have been found that the granularity of the feldspar that BAC applies when using feldspar A is less, it also is found to stop up sieve.When drying is used the feldspar that the BAC of feldspar A applies, the formation of particle has taken place, this has increased higher load granularity.This has also increased time of drying.Therefore feldspar B is preferred.
Find also that in addition it is not too uniform finding to apply when repeating this test in Sigma type mixing tank or ribbon blender, and find to have formed some pieces.The formation of known block can cause adding crushing load and the time of drying that increases man-hour, is not too preferred therefore.
Claims (according to the modification of the 19th of treaty)
1. water cleansing composition comprises:
A. the ionogen flocculation agent that is selected from aluminium salt and molysite of 30-70 weight %;
B. the neutral and/or anion-modified polymkeric substance flocculation agent of 0.5-5 weight % (MW〉100kD);
C. the mineral filler of 15-35 weight %, its density is at least 1.5 kg/dm
3With
D. the solution of the polymkeric substance of the quaternary ammonium cation tensio-active agent of 20-40 weight % and/or quaternary ammonium compound.
2. according to the composition of claim 1, wherein said quaternary ammonium surfactant is zephiran, hexadecyl-trimethylammonium-ammonium, tetradecyl-trimethylammonium-ammonium, dodecyl-trimethylammonium-ammonium, stearyl-trimethylammonium-ammonium, octadecyl-trimethylammonium-ammonium, dodecyl pyridine, cetyl pyridinium, the tetrabutyl-ammonium, four heptyl-ammonium, 1, the halogenide of 3-decyl-2-methyl-imidazoles, 1-hexadecyl-3-methyl-imidazoles, didecyl-dimethyl-ammonium, didecyl-dimethyl-ammonium.
3. according to each composition of aforementioned claim, wherein said composition further comprises the buffer reagent of the 5-20% that accounts for composition total weight.
4. according to each composition of aforementioned claim, the polymkeric substance of wherein said quaternary ammonium compound is selected from the diallyl dimethyl ammonium halide class.
5. according to the composition of claim 4, wherein said polymkeric substance is selected from polydiene propyl-dimethyl ammonium halide, and it has allyl group, is defined as H
2C=CH-CH
2R, wherein carbochain (R) has 8-22 carbon atom.
6. according to claim 4 or 5 each compositions, the molecular weight of the polymkeric substance of wherein said quaternary ammonium compound is 10-1000kD.
7. the water purification method of washing water, its step comprises:
A. every liter of washing water are metered into each the composition of claim 1-6 of 0.3 – 2g
B. stirred at least 10 seconds
C. make particles settling
D. from water, separate described particle.
8. external member, it comprises
A. the bucket;
B. baffle plate configuration;
C. each composition of potion claim 1-6 at least; With
D. operation instruction.
9. external member according to Claim 8, wherein said bucket further comprises water-freeing arrangement.
Claims (9)
1. water cleansing composition comprises:
A. the ionogen flocculation agent that is selected from aluminium salt and molysite of 30-70 weight %;
B. the neutral and/or anion-modified polymkeric substance flocculation agent of 0.5-5 weight % (MW〉100kD);
C. the mineral filler of 15-35 weight %, its density is at least 1.5 kg/dm
3With
D. the solution of the polymkeric substance of the quaternary ammonium cation tensio-active agent of 20-40 weight % and/or quaternary ammonium compound.
2. according to the composition of claim 1, wherein filler is 2:1-1:1.3 with the ratio of quaternary ammonium cation solution.
3. according to each composition of aforementioned claim, wherein said quaternary ammonium surfactant is zephiran, hexadecyl-trimethylammonium-ammonium, tetradecyl-trimethylammonium-ammonium, dodecyl-trimethylammonium-ammonium, stearyl-trimethylammonium-ammonium, octadecyl-trimethylammonium-ammonium, dodecyl pyridine, cetyl pyridinium, the tetrabutyl-ammonium, four heptyl-ammonium, 1, the halogenide of 3-decyl-2-methyl-imidazoles, 1-hexadecyl-3-methyl-imidazoles, didecyl-dimethyl-ammonium, didecyl-dimethyl-ammonium.
4. according to each composition of aforementioned claim, the polymkeric substance of wherein said quaternary ammonium compound is selected from the diallyl dimethyl ammonium halide class.
5. according to the composition of claim 4, wherein said polymkeric substance is selected from polydiene propyl-dimethyl ammonium halide, and it has allyl group, is defined as H
2C=CH-CH
2R, wherein carbochain (R) has 8-22 carbon atom.
6. according to claim 4 or 5 each compositions, the molecular weight of the polymkeric substance of wherein said quaternary ammonium compound is 10-1000kD.
7. the water purification method of washing water, its step comprises:
A. every liter of washing water are metered into each the composition of claim 1-6 of 0.3 – 2g
B. stirred at least 10 seconds
C. make particles settling
D. from water, separate described particle.
8. external member, it comprises
A. the bucket;
B. baffle plate configuration;
C. each composition of potion claim 1-6 at least; With
D. operation instruction.
9. external member according to Claim 8, wherein said bucket further comprises water-freeing arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610456871.3A CN105948205A (en) | 2010-12-24 | 2011-12-14 | Water clarification composition and process |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN3522MU2010 | 2010-12-24 | ||
| IN3522/MUM/2010 | 2010-12-24 | ||
| EP11155307 | 2011-02-22 | ||
| EP11155307.9 | 2011-02-22 | ||
| PCT/EP2011/072681 WO2012084621A1 (en) | 2010-12-24 | 2011-12-14 | Water clarification composition and process |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610456871.3A Division CN105948205A (en) | 2010-12-24 | 2011-12-14 | Water clarification composition and process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103269983A true CN103269983A (en) | 2013-08-28 |
Family
ID=45349513
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610456871.3A Pending CN105948205A (en) | 2010-12-24 | 2011-12-14 | Water clarification composition and process |
| CN2011800624387A Pending CN103269983A (en) | 2010-12-24 | 2011-12-14 | Water clarification composition and process |
| CN201180061505.3A Expired - Fee Related CN103261102B (en) | 2010-12-24 | 2011-12-14 | Water clarification composition and method |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610456871.3A Pending CN105948205A (en) | 2010-12-24 | 2011-12-14 | Water clarification composition and process |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180061505.3A Expired - Fee Related CN103261102B (en) | 2010-12-24 | 2011-12-14 | Water clarification composition and method |
Country Status (8)
| Country | Link |
|---|---|
| EP (2) | EP2655265B1 (en) |
| CN (3) | CN105948205A (en) |
| AU (2) | AU2011347795B2 (en) |
| BR (2) | BR112013015920B1 (en) |
| ES (2) | ES2536979T3 (en) |
| MX (2) | MX345139B (en) |
| WO (2) | WO2012084621A1 (en) |
| ZA (2) | ZA201304274B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111201203A (en) * | 2017-10-04 | 2020-05-26 | 荷兰联合利华有限公司 | Decontamination composition |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL3055044T3 (en) | 2013-10-08 | 2017-06-30 | Unilever N.V. | A device and a process for purification of grey water |
| GB2532433A (en) * | 2014-11-18 | 2016-05-25 | Isis Innovation | Removal and recovery of a charged species |
| EP3297957B1 (en) | 2015-03-23 | 2021-02-24 | Unilever NV | A device and a process for recovering clean water and surfactant concentrate from grey water |
| WO2016177552A1 (en) | 2015-05-06 | 2016-11-10 | Unilever N.V. | Continuous recycling of wash water with flocculation device and process |
| EP3427919B1 (en) | 2017-07-11 | 2021-08-11 | Canon Production Printing Holding B.V. | Method and device of forming a three-dimensional object |
| CN109205827B (en) * | 2018-09-05 | 2021-12-21 | 天津天智精细化工有限公司 | Sewage treatment method by using anionic surfactant |
| CO2018012207A1 (en) * | 2018-11-13 | 2020-05-15 | Vargas Jorge Javier Vargas | Composition and method of purification, disinfection and clarification of water |
| US20230035776A1 (en) * | 2018-12-03 | 2023-02-02 | Carbonet Nanotechonologies Inc. | Nanonets for removal of contaminants from aqueous solutions, kits therefor and methods of their use |
| CN114988540A (en) * | 2022-05-30 | 2022-09-02 | 包头钢铁（集团）有限责任公司 | Water-saving operation method of mechanical accelerated clarification tank |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331659A (en) * | 1998-11-07 | 2002-01-16 | 宝洁公司 | Process and compsn. for water recycle |
| WO2005003041A2 (en) * | 2003-06-16 | 2005-01-13 | Rhodia Chimie | Stabilised solutions of aluminium polychloride and iron salt for the treatment of effluents |
| FR2870229A1 (en) * | 2004-05-13 | 2005-11-18 | Acideka Sa Sa | Composition, useful as coagulating and flocculating agent in a process of solid-liquid separation, comprises metallic coagulant, polymeric organic flocculant and tensioactive system (non ionic, anionic or cationic tensio active system) |
| CN101254994A (en) * | 2008-03-25 | 2008-09-03 | 浙江华特新材料股份有限公司 | Mineral complex sewage treating method |
| CN101254958A (en) * | 2008-03-25 | 2008-09-03 | 浙江华特新材料股份有限公司 | Attapulgite sewage water treating method |
| CN101254959A (en) * | 2008-03-25 | 2008-09-03 | 浙江华特新材料股份有限公司 | Bentonite sewage water treating method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1025490C (en) * | 1984-02-03 | 1994-07-20 | 大陆制造及销售公司 | Method and apparatus for the clarification of sewage and other impure waste water |
| GB0220714D0 (en) | 2002-09-05 | 2002-10-16 | Ciba Spec Chem Water Treat Ltd | Dewatering of suspensions |
| BRPI0806740A2 (en) | 2007-02-01 | 2011-09-13 | Unilever Nv | water purification composition, water purification process and use of water purification composition |
-
2011
- 2011-12-14 CN CN201610456871.3A patent/CN105948205A/en active Pending
- 2011-12-14 MX MX2013007183A patent/MX345139B/en active IP Right Grant
- 2011-12-14 WO PCT/EP2011/072681 patent/WO2012084621A1/en active Application Filing
- 2011-12-14 EP EP11799155.4A patent/EP2655265B1/en active Active
- 2011-12-14 ES ES11797001.2T patent/ES2536979T3/en active Active
- 2011-12-14 CN CN2011800624387A patent/CN103269983A/en active Pending
- 2011-12-14 BR BR112013015920-0A patent/BR112013015920B1/en not_active IP Right Cessation
- 2011-12-14 EP EP11797001.2A patent/EP2655264B1/en not_active Not-in-force
- 2011-12-14 MX MX2013007329A patent/MX336389B/en unknown
- 2011-12-14 ES ES11799155.4T patent/ES2624762T3/en active Active
- 2011-12-14 AU AU2011347795A patent/AU2011347795B2/en not_active Ceased
- 2011-12-14 CN CN201180061505.3A patent/CN103261102B/en not_active Expired - Fee Related
- 2011-12-14 BR BR112013015918-9A patent/BR112013015918B1/en not_active IP Right Cessation
- 2011-12-14 WO PCT/EP2011/072684 patent/WO2012084622A1/en active Application Filing
- 2011-12-14 AU AU2011347794A patent/AU2011347794B2/en not_active Ceased
-
2013
- 2013-06-11 ZA ZA2013/04274A patent/ZA201304274B/en unknown
- 2013-06-19 ZA ZA2013/04509A patent/ZA201304509B/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331659A (en) * | 1998-11-07 | 2002-01-16 | 宝洁公司 | Process and compsn. for water recycle |
| WO2005003041A2 (en) * | 2003-06-16 | 2005-01-13 | Rhodia Chimie | Stabilised solutions of aluminium polychloride and iron salt for the treatment of effluents |
| WO2005003041A3 (en) * | 2003-06-16 | 2005-03-24 | Rhodia Chimie Sa | Stabilised solutions of aluminium polychloride and iron salt for the treatment of effluents |
| FR2870229A1 (en) * | 2004-05-13 | 2005-11-18 | Acideka Sa Sa | Composition, useful as coagulating and flocculating agent in a process of solid-liquid separation, comprises metallic coagulant, polymeric organic flocculant and tensioactive system (non ionic, anionic or cationic tensio active system) |
| CN101254994A (en) * | 2008-03-25 | 2008-09-03 | 浙江华特新材料股份有限公司 | Mineral complex sewage treating method |
| CN101254958A (en) * | 2008-03-25 | 2008-09-03 | 浙江华特新材料股份有限公司 | Attapulgite sewage water treating method |
| CN101254959A (en) * | 2008-03-25 | 2008-09-03 | 浙江华特新材料股份有限公司 | Bentonite sewage water treating method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111201203A (en) * | 2017-10-04 | 2020-05-26 | 荷兰联合利华有限公司 | Decontamination composition |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2011347795A1 (en) | 2013-06-20 |
| ES2536979T3 (en) | 2015-06-01 |
| MX345139B (en) | 2017-01-18 |
| ZA201304509B (en) | 2014-08-27 |
| CN103261102B (en) | 2016-09-14 |
| EP2655264B1 (en) | 2015-02-18 |
| CN105948205A (en) | 2016-09-21 |
| MX336389B (en) | 2016-01-18 |
| AU2011347795B2 (en) | 2015-03-26 |
| ZA201304274B (en) | 2014-08-27 |
| ES2624762T3 (en) | 2017-07-17 |
| MX2013007329A (en) | 2014-01-24 |
| MX2013007183A (en) | 2013-08-01 |
| BR112013015918B1 (en) | 2020-02-11 |
| BR112013015918A2 (en) | 2017-06-27 |
| BR112013015920B1 (en) | 2020-02-11 |
| EP2655265B1 (en) | 2017-02-08 |
| AU2011347794A1 (en) | 2013-06-20 |
| BR112013015920A2 (en) | 2016-09-20 |
| WO2012084622A1 (en) | 2012-06-28 |
| CN103261102A (en) | 2013-08-21 |
| EP2655265A1 (en) | 2013-10-30 |
| WO2012084621A1 (en) | 2012-06-28 |
| EP2655264A1 (en) | 2013-10-30 |
| AU2011347794B2 (en) | 2015-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103269983A (en) | Water clarification composition and process | |
| EP2679546B1 (en) | Water clarification composition and process | |
| CN110143623A (en) | Urban domestic sewage purifying agent and preparation method thereof | |
| CN1248972C (en) | Process and compsn. for water recycle | |
| CN109790052B (en) | Water purification composition for clarifying grey water | |
| CN103282314B (en) | Water clarification composition and method | |
| CN104379514B (en) | water purification composition and method | |
| WO2021224095A1 (en) | Composition | |
| CN110104747A (en) | A kind of composite flocculation medicinal powder and its application for flexible version printing ink wastewater treatment | |
| SE512118C2 (en) | Procedure for water purification | |
| JP3842134B2 (en) | Polymer flocculant dissolution method and flocculant | |
| JPH1170302A (en) | Treatment agent for purifying and separating pollutant | |
| Jiang et al. | Flocculation of organic matter and aluminum in water using chitosan-inorganic coagulant | |
| BR112019005719B1 (en) | COMPOSITION FOR WATER PURIFICATION FOR CLEANING GRAY WATER, PROCESS FOR CLEANING GRAY WATER AND USE OF THE COMPOSITION FOR PURIFICATION |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130828 |
|
| RJ01 | Rejection of invention patent application after publication |